SuperGrok vs ChatGPT Plus: $30 buys live X search, $20 buys Codex and the better model

Is ChatGPT better than Grok?

At the paid tier, ChatGPT Plus has the better model and SuperGrok has the better feed. GPT-5.6 Sol, the model OpenAI's help page gives Plus in Chat, scores 47 on the Artificial Analysis Intelligence Index; Grok 4.6, the model on xAI's $30 SuperGrok card, scores 44 (both read 27 September 2026). Grok is cheaper to run: a standard answer, 1,000 tokens in and 500 out, costs $0.005 on Grok 4.6 and $0.014 on Sol at list price. The extra $10 buys live X search, Imagine video and Grok Bot, none of which OpenAI sells at any consumer tier.

Everything below is from the two vendors' own plan and help pages, US prices, read on 27 September 2026.

The model row is where the two vendors' pages disagree with themselves. OpenAI's pricing page lists "Advanced reasoning models with GPT-6" under Plus. Its help page on GPT-5.6 and GPT-6 Pro, updated in September 2026, says Plus gets GPT-5.6 Sol at Medium and High in Chat, and that "Plus plans include GPT-6 Astra in ChatGPT Work and Codex", with GPT-6 Pro in Chat reserved for Pro $100 and above. Read both as true: on Plus, Astra writes your code and runs your Work tasks, and Sol answers your chat. xAI's page is simpler and older: the SuperGrok card says "Grok 4.6 model", and the Grok 4.7 announced on 21 September 2026 runs in Grok Build, Cursor and the API, not in Chat.

SuperGrok vs ChatGPT Plus usage limits: what each vendor actually publishes

Neither vendor publishes a message count for its tier as of 27 September 2026, so every "160 messages every 3 hours" figure in the reviews ranking for this comparison is a third party estimate or a number from an older meter. What the vendors do publish is the shape of the limit, and the shapes are different enough to decide the purchase for a heavy user.

xAI's consumer FAQ describes the SuperGrok meter that replaced daily caps in June 2026: "Instead of separate daily limits for each product (like Chat, Imagine, Voice, or Build), you get one shared weekly usage pool that you can spend however you like across any Grok product." The pool shows in Settings, Usage as a percentage broken down by product. A video or a long Build job costs far more of it than a chat message. When it runs out, "paid features will pause until your weekly limit resets", the free tier's Chat and Voice limits keep working, and you can buy Extra Usage Credits from $5 on the web, at standard rates that xAI says cost more per action than the included pool, expiring a year after purchase. One quota is hard: xAI says 720p videos "automatically fall back to 480p once you hit the 720p cap for your tier".

OpenAI's meter is looser and less visible. The plan page gives every tier, Free included, "Unlimited text chats subject to abuse guardrails", and marks Plus "Limits apply". The Plus help page says "Plus subscriptions may include usage limits such as message caps, especially during high demand", and the GPT-5.6 page says thinking limits "depend on your plan" and that "If you reach a GPT-5.6 Thinking limit, ChatGPT may continue with another available model." The only numbers OpenAI prints are for the Pro models: 50 GPT-6 Pro messages a week on Pro $100, 200 a week on Pro $200, which stopped taking new sign ups on 10 September 2026.

The difference in practice: Grok stops and sells you more; ChatGPT degrades and sells you nothing short of Pro. If your week has one heavy day, the weekly pool suits you, because a slow Tuesday funds a busy Friday. If you push a reasoning model for hours every day, Plus's silent fallback to a lesser model is the cost you will feel, and neither plan page will tell you in advance when it happens.

Is Grok more expensive than ChatGPT?

Yes at the tier people compare, $30 against $20, and no per token: Grok 4.6 lists at $2 per million input tokens and $6 per million output, GPT-5.6 Sol at $4 and $20, GPT-6 Astra at $10 and $50 (Artificial Analysis, read 27 September 2026). The consumer price and the model price run in opposite directions.

Both ladders have more rungs than the two people argue about. xAI's pricing page sells SuperGrok Lite at $10, SuperGrok at $30, SuperGrok Plus at $100 with "significantly higher usage" and 1080p video, and SuperGrok Heavy at $300, and its docs warn that a large unexpected invoice "is often a SuperGrok Heavy yearly subscription, not API usage". Grok also rides on X: Premium at $8 a month gives "increased usage limits on Grok", and Premium+ at $40 a month, or $395 a year on the web, includes SuperGrok itself. If you would pay for Premium+ anyway, SuperGrok is $10 more than the ad free X plan, not $30. OpenAI sells Go at $8 (its page says the plan "may include ads"), Plus at $20, Pro at $100 and Pro at $200, with no annual option on Plus at all.

Refunds are the one line where the two match: xAI's FAQ says approved refunds typically reach the original payment method within 5 to 10 business days, through its Refund Request form for web and Google Play purchases, and OpenAI's Plus page gives the same 5 to 10 business days after approval. Grok bought through X Premium is the exception, because X's help page says "All subscriptions are non-refundable, unless required by law." Which company billed you decides which rule applies; the SuperGrok refund page walks the three routes.

Which plan wins by job: coding, images, video, live X data and memory

ChatGPT Plus wins coding, research and anything a client will read; SuperGrok wins live X data, video and the cheaper model. The table takes each job the autocomplete variants ask about, with the vendor page behind each call.

Two jobs are ties nobody should pay $10 for. Voice is on both ($30 buys Grok's voice mode with what xAI calls sub second latency, $20 buys ChatGPT voice with video), and everyday drafting is indistinguishable at three points of Intelligence Index. If your list is mostly those two rows, you are choosing on the limits shape above and on the privacy defaults below.

Which plan trains on your chats by default?

Both do, unless you flip a switch, and the switches are in different places. xAI's consumer FAQ: "We may use your content and interactions with Grok (e.g., prompts, searches, and other materials you submit) along with Grok's responses to train our models." OpenAI's plan comparison marks the consumer plans "Content is used to train our models" with "Opt-out available", and the Plus help page adds that "You can opt out of having your data used for training at any time."

In ChatGPT the switch is Settings, Data controls, "Improve the model for everyone". In the Grok app it is Settings, Data Controls, "Improve the model", and if you also use Grok inside X there is a second switch under Privacy & Safety, Data sharing and personalization, Grok & Third-party Collaborators. X's help page also says that thumbs up or thumbs down feedback lets X and xAI "use that conversation" to train, opt out or not. Turning off AI training in eight assistants has every path, switch by switch.

The private modes differ by a few words that matter. Grok's Private Chat, the ghost icon at the top right, means "your conversation history will not be viewable to you and will be deleted from SpaceXAI systems within 30 days". ChatGPT's temporary chats stay out of history and memory and can be kept up to 30 days for safety review. On memory, OpenAI now shows Sources under a personalized answer and lets you delete a saved memory, a referenced chat or a connected file one at a time; turning off "Reference chat history" schedules what was learned from past chats for deletion within 30 days. xAI's product page lists "Memory across chats" and points memory and file controls to Profile, Settings, Data Controls, with less published about what is stored. If auditability of what the assistant knows about you is part of the decision, Plus is ahead as of September 2026.

Should you pay for neither and buy one multi-model plan?

Only if the reason you wanted Grok was the model rather than the feed. A multi-model workspace gives you Grok 4.6 and GPT-5.6 Sol on one login, so the head to head above becomes a per prompt choice instead of a $50 a month pair of subscriptions, and that is exactly the buyer both vendors lose.

Whizi, which publishes this page, puts Grok 4.6 at 6 credits a message and GPT-5.6 Sol at 20 on its Pro plan, 2,500 credits a month for $29.99 monthly or $19.99 on the yearly rate ($1.99 for the first week), so 2,500 credits is 416 Grok answers, or 125 Sol answers, or any mix, with web search on by default and one thread you can switch between the two models mid conversation. Its policy line is one sentence: "Whizi does not use your prompts, files, conversations, voice transcripts, or generated content to train Whizi-owned AI models." Where it loses is the whole reason this page exists: Grok on Whizi is the model without the X feed, so no live X search, no Imagine images or video and no Grok Bot; on the OpenAI side it has no Codex and no ChatGPT Work, and at the monthly price it costs the same $30 as SuperGrok. The Grok in Whizi page lists the rows and plan gates.

The decision rule, then. Pay xAI $30 if live X search or Imagine video is part of your work and you would not otherwise pay for X Premium+, which already includes it. Pay OpenAI $20 if you code, run research reports or send AI text to clients, and accept a limit you cannot see. Pay neither and buy one multi-model plan if what you want is the two models on the same prompt; the day you need the X feed, that plan cannot give it to you. Is SuperGrok worth it takes the xAI side of that rule on its own, tier by tier.